When i was age 20 i got up to 40 pullups either way, palms facing and palms away. with my legs in a straight “L” postion toes about eye level. And 10 sets of wide grip pullups with 50# weight. 5 sets to back of neck and the 5 sets to the front of the neck. These were at a moderate pace, no kipping and full range. Actually it was my grip that was my limit not the pullup.
I got up to 3 one arm pullups with either arm from a dead hang, full range. 5’ 91/2" 165#
At age 46 now, I can still do 25 pullups and about 5-7 with 40# weight at a weight of 195# I am thinking about dropping 20# though so i can get the reps up higher a bit more easily.